XU Xin,LI Xianghong*.Study on the Inhibition Action of Hexadecylpyridinium Bromide on Steel in Sulfuric Acid Solution[J].Plating & Finishing,2021,(10):1-7.[doi:10.3969/j.issn.1001-3849.2021.10.001]
溴化十六烷基吡啶在硫酸溶液中对钢的缓蚀性能研究
- Title:
- Study on the Inhibition Action of Hexadecylpyridinium Bromide on Steel in Sulfuric Acid Solution
- 文献标志码:
- A
- 摘要:
- 采用失重法、动电位极化曲线、电化学阻抗谱（EIS）、扫描电子显微镜（SEM）及原子力显微镜（AFM）研究了阳离子表面活性剂溴化十六烷基吡啶（HDPB）在1.0 mol/L H2SO4溶液中对冷轧钢的缓蚀性能。结果表明：HDPB具有良好的缓蚀性能，缓蚀率随缓蚀剂浓度和温度的增加而增大，50 ℃时100 mg/L HDPB的最大缓蚀率可高达98.2 %。HDPB属于混合抑制型缓蚀剂，添加HDPB后电荷转移电阻显著增大，且SEM与AFM的微观形貌进一步证实了HDPB有效减缓了冷轧钢表面的腐蚀程度。
- Abstract:
- The inhibition action of the cationic surfactant hexadecylpyridinium bromide （HDPB） on cold rolled steel in 1.0 mol/L H2SO4 solution was studied by weight loss method, potentiodynamic polarization curves, electrochemical impedance spectroscopy （EIS）, scanning electron microscope （SEM） and atomic force microscope （AFM）. The experimental results showed that the HDPB was a good inhibitor, and inhibition efficiency increased with the inhibitor concentration and temperature in general. At 50 ℃, the maximum inhibition efficiency of 100 mg/L HDPB obtained from weight loss method was as high as 98.2 %. HDPB was a mixed inhibitor. The charge transfer resistance was increased to more extent with the addition of HDPB. SEM and AFM micro-morphologies of steel surfaces confirmed that the corrosion degree of steel surface was efficiently retarded by HDPB.
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备注/Memo
收稿日期： 2020-06-09；修回日期： 2020-06-25
作者简介： 徐昕（1994－），硕士生，email： 972655706@qq.com
通信作者： 李向红（1981—），男，博士，教授，研究方向为缓蚀剂。email：xianghong-li@163.com
基金项目： 国家自然科学